Observation Instance – Django REST framework

Get a list of Observation objects.

### Available end points:

- `/observations/` - Will list all Results in the database
- `/observations.json` - Will return all Results in json format. This can
also be achieved by using the accept header. `application/json`
- `/observations/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `status`
- `result_field`
- `discoveryKeywords`
- `updateFrequency`
- `nonGeographicFlag`
- `publicationState`
- `permissions`

### How to use filters:

These filters can be used like django query filters using __ for related model relationships.

- `/observations/?uuid=d594d53df2612bbd89c2e0e770b5c1a0`
- `/observations/?status=completed`
- `/observations/?results_field__dataPath__startswith=/neodc/esacci`
- `/observations/?discoveryKeywords__name=ESACCI`
- `/observations/?nonGeographicFlag=True`

Filters can be stacked to build an 'AND' relationship. E.g.

- `/observations/?publicationState__in=published,citable&nonGeographicFlag=True`
- `/observations/?publicationState__in=published,citable&discoveryKeyword__name=NDGO0003`

GET /api/v2/observations/26721/?format=api

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 26721,
    "uuid": "418208c3a0874a4aa2e49bdbc0a32d36",
    "title": "Methane Observations and Yearly Assessments (MOYA): Isotopic d13C methane measurements taken from Alert, Canada",
    "abstract": "This dataset contains air sample measurements of the ratio between carbon 12: carbon 13 in atmospheric methane (d13C). The air samples measured were taken at Alert, Canada on a regular basis using glass flasks. The samples were analysed for the carbon ratio in methane at Royal Holloway University of London using continuous flow gas chromatography/isotope ratio mass spectrometry (CF-GC/IRMS). \r\n\r\nThis data was collected as part of the Methane Observations and Yearly Assessments (MOYA) project funded by the Natural Environment Research Council (NERC) (NE/N016211/1).",
    "keywords": "MOYA, Methane, d13C, Isotope, NERC",
    "publicationState": "citable",
    "dataPublishedTime": "2018-11-27T13:23:16",
    "doiPublishedTime": null,
    "updateFrequency": "asNeeded",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/26730/?format=api",
        "dataPath": "/badc/moya/data/stations/alert",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 15751,
        "numberOfFiles": 2,
        "fileFormat": "Data are BADC-CSV formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7208/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/792/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58285/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58286/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58287/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/58288/?format=api"
    ],
    "dataLineage": "The data were collected locally at Alert, Canada and sent to the Royal Holloway University of London analysis and deposited at the Centre for Environmental Data Analysis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10005/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24718/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/24762/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112437/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112438/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112439/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112440/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112433/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112434/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112441/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112436/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112435/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168379/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112442/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112443/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112444/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/112445/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/26722/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}